多项选择题
Which two authentication protocols can be configured for RIP on an ERX Edge Router? （）
A.A B.B C.C D.D
单项选择题 A RIPv1 Response message includes which of the following fields?（）
单项选择题 Which RIP message type is used to deliver route information to neighbors?（）
单项选择题 Which RIP message type is used to ask neighbors for updates?（）
